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Finding the Fourth Proportional to 491,306.80, 736,877.76 and 136,356.88

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Solution

The fourth proportional to 491,306.80, 736,877.76 and 136,356.88 is: 204,512.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,306.80 : 736,877.76 = 136,356.88 : x
  2. Step 2: Convert to fraction form
    491,306.80/736,877.76 = 136,356.88/x
  3. Step 3: Cross multiply
    491,306.80x = 736,877.76 × 136,356.88
  4. Step 4: Simplify right side
    491,306.80x = 100,478,352,294.99
  5. Step 5: Solve for x
    x = 100,478,352,294.99/491,306.80
  6. Step 6: Final answer
    x = 204,512.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.